Qjin USB Power Adapter for Roku Streaming Stick HD/Plus 2025, Roku Express & Fire TV Stick, 5V USB Wall Power Block

I'm pretty sure that would do it. Another US equivalent (but not Amazon branded): https://www.amazon.com/Qjin-Power-Adapter-Express-Stick/dp/B0DBZTVM5M As I say, there are loads of them. One of the older Firesticks would need a 5W supply, but a 4K Firestick needs 9W. It's just a case of the right power and right USB for the device you have.